Spring weight for wr450 and yz450

Can anyone tell me the spring weight for an 03' wr450? Some guy is telling me that the yz450 springs are a heavier weight. I need a little heavier sping in both ends and he says he will sell' em cheap.

I will keep looking.

Thanks in advance,


I think it's 5.2kg/mm, but I could be wrong....I put a 5.6 on mine.

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